7. THC System Lifespan
If you smoke once or twice, THC will only stay in your system for five to eight days. A smoker who gets high two to four times per week will spend 11–18 days with THC in their system. Smoking weed five to six times per day will take about 33–48 days to get out of the system.
Finally, a daily smoker will typically have to wait for 49–63 days for clearance.